A263680 Number of length n arrays of permutations of 0..n-1 with each element moved by -5 to 5 places and with no two consecutive decreases.

1, 2, 5, 17, 70, 349, 1658, 7356, 30374, 121676, 479589, 1917853, 7777174, 31840851, 130793340, 537219555, 2200344721, 8992050521, 36701192008, 149773458903, 611384304706, 2496957012448, 10201222295479, 41681902590078

Offset

1,2

Comments

Column 5 of A263683.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=7
..0....4....3....5....0....5....2....0....4....2....0....2....4....2....3....5
..3....0....0....0....3....1....3....4....5....3....2....3....6....5....5....1
..6....5....2....3....4....2....0....1....6....5....4....0....0....6....0....4
..4....2....1....6....1....6....5....2....0....0....1....5....5....0....1....0
..5....6....6....1....2....0....1....5....1....1....3....1....2....3....6....3
..1....1....4....2....5....4....6....3....2....4....5....4....3....4....2....6
..2....3....5....4....6....3....4....6....3....6....6....6....1....1....4....2

Crossrefs

Cf. A263683.

Sequence in context: A263679 A251177 A263640 * A263641 A263681 A263642

Adjacent sequences: A263677 A263678 A263679 * A263681 A263682 A263683

Keyword

nonn

Author

R. H. Hardin, Oct 23 2015

Status

approved